/*
 * Copyright 2014-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.codecentric.boot.admin.server.notify.filter;

import java.time.Instant;

import javax.annotation.Nullable;

import de.codecentric.boot.admin.server.domain.entities.Instance;
import de.codecentric.boot.admin.server.domain.events.InstanceEvent;

public abstract class ExpiringNotificationFilter extends AbstractNotificationFilter {

	@Nullable
	private final Instant expiry;

	public ExpiringNotificationFilter(@Nullable Instant expiry) {
		this.expiry = expiry;
	}

	public boolean isExpired() {
		return expiry != null && expiry.isBefore(Instant.now());
	}

	@Override
	public boolean filter(InstanceEvent event, Instance instance) {
		return !isExpired() && doFilter(event, instance);
	}

	protected abstract boolean doFilter(InstanceEvent event, Instance instance);

	@Nullable
	public Instant getExpiry() {
		return expiry;
	}

}
